LDAPClientTest.java

import java.util.Hashtable;
import javax.naming.Context;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.directory.Attribute;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;
import javax.naming.directory.SearchControls;
import javax.naming.directory.SearchResult;
//以下のサイトのサンプルコードを自分で他人に説明する時に説明しやすい用に変更しました
//https://www.earthlink.co.jp/engineerblog/technology-engineerblog/3336/ 
public class LDAPClientTest {
  public static void main(String[] args) throws NamingException {
    String userId = "認証を試したいユーザ名";
    String userPass = "userPassのパスワード";
    
    final String LDAPuser = "LDAP認証用をさせる用にアカウントを作る@hogehoge.private";
    final String LDAPpass = "LDAPuserのパスワード";
    final String LDAPserver = "ldaps://ad01.hogehoge.private:636";
    final String baseDn = "dc=hogehoge,dc=private";

		Hashtable<String, String> env = new Hashtable<String, String>();
		env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
		env.put(Context.PROVIDER_URL, LDAPserver);
		env.put(Context.SECURITY_AUTHENTICATION, "simple");
		env.put(Context.SECURITY_PRINCIPAL,LDAPuser);
		env.put(Context.SECURITY_CREDENTIALS, LDAPpass);
		DirContext dirContext = null;
	try {
		dirContext = new InitialDirContext(env);
		SearchControls searchControls = new SearchControls();
		searchControls.setSearchScope(SearchControls.SUBTREE_SCOPE);
		String filter = "sAMAccountName=";
		NamingEnumeration<SearchResult> searchResult =
			dirContext.search(baseDn, filter + userId, searchControls);
		if (searchResult.hasMoreElements()) {
			SearchResult sr = (SearchResult) searchResult.nextElement();
			String userName = sr.getName();
			if(userPass.isEmpty()){
				System.out.println("password is empty");
				throw new NamingException();
			}
			String password = userPass;
			System.out.println(userName);
		 	env.put(Context.SECURITY_PRINCIPAL, userName + "," + baseDn);
			env.put(Context.SECURITY_CREDENTIALS, password);
			dirContext = new InitialDirContext(env);
			System.out.println("CertificationStatus.CR_OK");
			return;
		} else {
			System.out.println("UserNotFound:" + userId);
			return;
		}
	} catch (NamingException e) {
		System.out.println("Search User fail or password fail");
		e.printStackTrace();
	} catch (Exception e) {
		e.printStackTrace();
	} finally {
		try {
			dirContext.close();
		} catch (NamingException e) {
			e.printStackTrace();
		}
	}
	}
}